Difference between rods and cones -
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Rods
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Cones
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1. More in number 1150 lakh
2. Outer seg. is cylindrical and contains rodopisin
3. Rods are alike
4. Concerned with night blindness
5. Sensitive to dim light
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Less in number 65 lakh
Outer segment is conical & contain iodopsin
Cones are of 3 types
Colour blindness
Sensitive to sharp light
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